ok forget it max of $650 for a new setup

after further thought of about 20 minutes i've decided that i'm just not really sure about anything, mabye becasue it is late or i'm crazy but never the less. i have a 650 dollar budget to work with. i want either a 4-10 cab with a head or a 2-10 and a 1-15 with a head and i will be gigging with it (mostly a rock/metal/screamo music) so it has to be loud but i need it to be clear in the mid range and be able to shake the windows with the low end. any suggestions would be good and i know that isn't much of a budget but that is all i can afford. oh and i would like to buy new.

With that budget, you'll have to shop used. A used GK 800 rb can often be found in the $300/$350 ball park. And a used carvin or avatar 410 for the other $300... not impossible, but you'll have to shop around.